Ajax coach Marcel Keizer has described the past week as one of "emotion and sadness" following the tragic event involving midfielder Abdelhak Nouri that left him with permanent brain damage.

Nouri, 20, fell to the ground 70 minutes into a game against Werder Bremen last Sunday. He was airlifted to hospital and put into intensive care where results showed that his brain was being starved of oxygen. Tests also revealed he had suffered heart rhythm problems during the game.